Portland, architecture and LEGO all collided one day in MLCAD as I decided to replicate skyscrapers in itty-bitty scale. The First Interstate Tower stands 546' tall. At Nano scale, this translates to 546'x12 = 6552" / 1000 = 6.55". My model stands 6.5" according to MLCAD.

There is a 4x4 structural tower through the building, with 'curtain walls' hanging off of it. Amidst the 2x4 stacked central bricks are a couple of cross-ties to hold the walls to each other.